1564941089 has 2 divisors, whose sum is σ = 1564941090. Its totient is φ = 1564941088.

The previous prime is 1564941071. The next prime is 1564941107. The reversal of 1564941089 is 9801494651.

It is a balanced prime because it is at equal distance from previous prime (1564941071) and next prime (1564941107).

It can be written as a sum of positive squares in only one way, i.e., 1222691089 + 342250000 = 34967^2 + 18500^2 .

It is a cyclic number.

It is not a de Polignac number, because 1564941089 - 2¹⁶ = 1564875553 is a prime.

It is a super-2 number, since 2×1564941089² = 4898081224081011842, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (1564941029) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 782470544 + 782470545.

It is an arithmetic number, because the mean of its divisors is an integer number (782470545).

Almost surely, 2^1564941089 is an apocalyptic number.

It is an amenable number.

1564941089 is a deficient number, since it is larger than the sum of its proper divisors (1).

1564941089 is an equidigital number, since it uses as much as digits as its factorization.

1564941089 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 311040, while the sum is 47.

The square root of 1564941089 is about 39559.3363063639. The cubic root of 1564941089 is about 1161.0011889903.

The spelling of 1564941089 in words is "one billion, five hundred sixty-four million, nine hundred forty-one thousand, eighty-nine".